seafaring nation, and over the centuries, they have become skillful at finding ways of living close to water. they've had to. almost half of the country lies below sea level, but the dutch have managed to keep their feet dry, thanks to a clever system of channels, bridges, and levees across the country. what is considered the oldest city in the netherlands was built on the banks of a river that was and still is good for trade, but it also makes the town very susceptible to rising water levels brought on by climate change. the people are worried that their levees may soon prove ineffective, and so they've come up with a creative solution. >> the city embraces the rhine, but soon, one arm of the river will flow through an entire section of the city. according to the plan, about half of these houses will give way to water.